Vibration-induced Kondo tunneling through metal-organic complexes with even electron occupation number

Abstract

We investigate transport through a mononuclear transition-metal complex with strong tunnel coupling to two electrodes. The ground state of this molecule is a singlet while the first excited state is a triplet. We show that a modulation of the tunnel-barrier due to a molecular distortion which couples to the tunneling induces a Kondo-effect, provided the discrete vibrational energy compensates the singlet/triplet gap. We discuss the single-phonon and two-phonon assisted co-tunneling and possible experimental realization of the theory.

arXiv comment4 pages, 3 eps figures

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Cited by in corpus (8)

• Theory of the Franck-Condon blockade regime
• Charge transport through single molecules, quantum dots, and quantum wires
• Ground-state properties of gapped graphene using the random phase approximation
• Tunneling through triple quantum dots with mirror symmetry
• Low-energy physics of three-orbital impurity model with Kanamori interaction
• Kondo Shuttling in Nanoelectromechanical Single-Electron Transistor
• Slave boson theory for transport through magnetic molecules with vibronic states
• Phonon-assisted and magnetic field induced Kondo tunneling in single molecular devices